It wasn't meant to be runnable code, just to indicate logical grouping.

More verbosely: It is not immediately obvious whether that line means "check the date of the file and, if it's less than a week old, shift or die" or "if shift returns a false value and the file is less than a week old, then die".

In reply to Re^3: shift or die unless by dsheroh
in thread shift or die unless by joec_

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